Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
1 | 1 |
2 | 0 |
3 | 0 |
4 | 0 |
5 | 0 |
6 | 0 |
7 | 0 |
8 | 0 |
9 | 0 |
10 | 4 |
11 | 56 |
12 | 18 |
13 | 116 |
14 | 112 |
15 | 408 |
16 | 916 |
17 | 2400 |
18 | 7228 |
19 | 27368 |
20 | 111478 |
21 | 445644 |
22 | 1674860 |
23 | 7624368 |
24 | 38737270 |
25 | 178933064 |
[1,0,0,0,0,0,0,0,0,4,56,18,116,112,408,916,2400, 7228,27368,111478,445644,1674860,7624368,38737270, 178933064] |